AA 3278 then AA 674 at Philadelphia
Pittsburgh → Philadelphia → Miami
Timetable, Philadelphia time
07:25AA 3278 from Pittsburgh at the gate
13:00AA 674 to Miami leaves the gate
5 h 35 apart on the timetable
The last days
AA 3278 and AA 674 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.